This staircase consists of separate units, which can be combined to a stair of any desired height in steps of 20 cm, by simply bolting them together. The units can be connected to both sides, which makes it possible to create a staircase of several heights as well as different widths. The railing can be connected to the sides of the stairs, but also in between the steps, thereby creating the possibility to have a separate up and down staircase. The measurements of the individual stair units are: 910 x 225mm.